package main

import (
	"fmt"
)

func main() {

	//大于256
	v := []byte{}
	fmt.Println(len(v), cap(v))
	for i := 0; i < 512; i++ {
		v = append(v, 1)
	}
	fmt.Println(len(v), cap(v))
	v = append(v, 1)
	fmt.Println(len(v), cap(v))
}
